From: Bob Nelson (nelsnjr@cox.net)
Date: Fri Dec 16 2005 - 22:12:07 GMT-3
Chris:
That is not a shameless plug, but good information. I too am working for a
company that is converting
from frame to MPLS. Our initial solution was to use GRE tunnels. That is
working OK, but there issues
sometimes with the QoS on the data in the tunnel and the QoS on the packets
keeping the tunnel alive. Our next step is to remove the tunnels and
redistribute our internal networks to BGP at the edge.
Bob
----- Original Message -----
From: "Chris Lewis" <chrlewiscsco@gmail.com>
To: "CCIEin2006" <ciscocciein2006@gmail.com>
Cc: "lab" <ccielab@groupstudy.com>
Sent: Friday, December 16, 2005 3:57 PM
Subject: Re: OT - Good Intro to MPLS book
> Interesting thread. Putting aside the CsC discussion there rae a number of
> issues I would recommend one consider when buying an MPLS VPN service from
a
> provider. Strating with the following:
>
> If you implement QoS on your network, how is that going to map to the
> service provider QoS offering? Normally providers require marking of a
given
> type for admission to priority, or high priority data classes. Does this
> match your internal marking scheme? If not how are you going to map them
> together?
> Regarding routing metrics, will they be transported transparently through
> the provider network? If you are using BGP between CE and PE, are you OK
> with internal routes originated in say site 1, appearing as external
routes
> in say site 2? Will that cause any issues during transition from the
legacy
> to new network? Other CE to PE routihng protocols have other issues.
> How are you going to handle multicast between sites? MPLS VPNs typically
> only support unicast. Are you going to do a GRE tunnel overlay, or is your
> provider going to offer mVPN (not many do today).
>
> I hate to make a shameless plug, but after working with Cisco's internal
IT
> department to convert Cisco's WAN from a frame network to a provider
> delivered MPLS VPN, we unearthed lots of issues to think about and wrote
it
> all down in a book called "Selecting MPLS VPN services" by Cisco Press,
> available soon after the holidays.
>
> Chris
>
>
> On 12/16/05, CCIEin2006 <ciscocciein2006@gmail.com> wrote:
> >
> > Can anyone recommend a good intro to MPLS book - specifically from an
> > enterprise and not from a service provider point of view.
> > I don't want to be bothered with the details of how MPLS works in a
telco
> > cloud, but I would like to know how to manage
> > the customer edge routers if my company plans on moving to MPLS.
> >
> > Thanks in advance.
> >
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